JPH0196414A - Diesel exhaust gas purifier - Google Patents
Diesel exhaust gas purifierInfo
- Publication number
- JPH0196414A JPH0196414A JP62251033A JP25103387A JPH0196414A JP H0196414 A JPH0196414 A JP H0196414A JP 62251033 A JP62251033 A JP 62251033A JP 25103387 A JP25103387 A JP 25103387A JP H0196414 A JPH0196414 A JP H0196414A
- Authority
- JP
- Japan
- Prior art keywords
- ceramic honeycomb
- exhaust gas
- electric heater
- outer periphery
- particulates
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 57
- 238000010438 heat treatment Methods 0.000 claims abstract 4
- 238000000746 purification Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 36
- 238000002485 combustion reaction Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 6
- 210000004027 cell Anatomy 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 230000005611 electricity Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 2
- 210000002421 cell wall Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Landscapes
- Processes For Solid Components From Exhaust (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はディーゼルエンジンの排ガスを浄化する、とり
わけ排ガス中に含まれるパティキュレート（煤）を除去
する装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for purifying the exhaust gas of a diesel engine, particularly for removing particulates (soot) contained in the exhaust gas.
従来の技術
近年ディーゼルエンジンが排出するパティキュレートが
健康上の理由がら規制され始めている。BACKGROUND OF THE INVENTION In recent years, particulates emitted by diesel engines have begun to be regulated for health reasons.
これを取り除き、ディーゼルの排ガスを浄化するには、
排気管の途中に耐熱性のセラミックハニカムのフィルタ
を取り付け、パーティキュレートを濾過する方法がある
。そしてこの方法の特徴は、ある程度パティキュレート
が堆積したとき、これに火をつけて燃焼させ、炭酸ガス
に変えて大気に放出して、セラミックフィルタをクリー
ンに再生し、繰り返し使用することである。この作業を
リジェネレーションと呼んでいる。一般にディーゼルエ
ンジンは排ガス温度が低いので、パティキュレートはそ
のままでは燃えない。よって、リジェネレーションには
何らかの方式によって排ガス温度を上げるか、又はパテ
ィキュレートの着火温度を下げて燃焼させてやらなけれ
ばならない。このリジェネレーションの方式としてフィ
ルタのエンジン側上流にバーナや電気ヒータを設け、そ
の熱でもってパティキュレートを着火温度まで高めるの
がある。To remove this and purify diesel exhaust gas,
There is a method to filter particulates by installing a heat-resistant ceramic honeycomb filter in the middle of the exhaust pipe. The feature of this method is that when a certain amount of particulates has accumulated, it is ignited and burned, converted into carbon dioxide gas, and released into the atmosphere, thereby regenerating the ceramic filter clean and allowing it to be used repeatedly. This work is called regeneration. In general, diesel engines have low exhaust gas temperatures, so particulates do not burn as they are. Therefore, for regeneration, it is necessary to raise the exhaust gas temperature by some method or lower the ignition temperature of particulates and burn them. One method of regeneration is to install a burner or electric heater upstream of the filter on the engine side, and use the heat to raise the particulates to the ignition temperature.
発明が解決しようとする問題点
しかし、パティキュレートは、電気ヒータなりオイルバ
ーナで一旦着火させられると、急激に燃焼が始まり、セ
ラミックのフィルタ内部は、燃焼熱でもって１０００℃
以上にも温度が高まる。−方、セラミックハニカムの外
周近傍では、一般には外周に断熱材を巻いて容器との間
の熱伝導ロス小さくするようにはしているが、それでも
温度は放熱によって低い状態に置かれる。よってセラミ
ックハニカムの外周から数ｍｍ以内は、温度勾配が３０
０℃／ ｍ ｍ以上になることもある。その結果セラミ
ックハニカムの外周は熱応力としての引っ張りを受ける
。そしてこの応力にセラミックスは絶え切れず、外周部
にリングオフと呼ばれるリング状のクラックが生じる。Problems to be Solved by the Invention However, once particulates are ignited by an electric heater or oil burner, combustion begins rapidly, and the temperature inside the ceramic filter reaches 1000 degrees Celsius due to the heat of combustion.
The temperature increases even more. On the other hand, near the outer periphery of a ceramic honeycomb, a heat insulating material is generally wrapped around the outer periphery to reduce heat conduction loss between the honeycomb and the container, but the temperature remains low due to heat radiation. Therefore, within a few mm from the outer periphery of the ceramic honeycomb, the temperature gradient is 30
The temperature may exceed 0°C/mm. As a result, the outer periphery of the ceramic honeycomb is subjected to tension as thermal stress. The ceramic is constantly exposed to this stress, and a ring-shaped crack called a ring-off occurs on the outer periphery.
そこで本発明は、セラミックハニカムの内部でパティキ
ュレートが急激に燃焼して内部が高温に加熱されても、
外周部でリング状のクラックが生じないようにして、構
造体としての原形を保ち、エンジンの耐用年数に見合う
長期間の使用にも十分耐えるディーゼル排ガス浄化装置
を提供するものである。Therefore, the present invention has been developed so that even if particulates are rapidly burned inside the ceramic honeycomb and the inside is heated to a high temperature,
To provide a diesel exhaust gas purifying device that prevents ring-shaped cracks from occurring on the outer periphery, maintains its original shape as a structure, and sufficiently withstands long-term use commensurate with the service life of an engine.
問題点を解決するための手段
セラミックハニカムの外周に電気抵抗線を巻き、これを
外部に取り出す電極に接続して、外部の電源、例えばバ
ッテリーから通電可能としたものである。Means for Solving the Problems An electric resistance wire is wound around the outer periphery of the ceramic honeycomb, and this wire is connected to an electrode taken out to the outside, so that electricity can be supplied from an external power source, such as a battery.
作用 本発明の技術的手段による作用は次のようになる。action The effects of the technical means of the present invention are as follows.
すなわち、セラミックハニカム外周に巻き付けた電気ヒ
ータに約１００Ｗｈｒの電力を印加すると、ヒータは赤
熱し、セラミックハニカムの外周を加熱する。一方、ヒ
ータから外へは、セラミックハニカムに巻かれた断熱・
材によって僅かに逃げる。そのためセラミックハニカム
の外周近傍は、通常加熱しなかった場合より約１００℃
以上の温度に持ち上げられる。これはセラミックハニカ
ムの外周が熱膨張のために軸方向に伸びて、内部に引っ
張り応力を与える状態である。この状態のまましばら（
維持しておき、セラミックハニカムに堆積したパティキ
ュレートに電気ヒータやオイルバーナで着火させると燃
焼が始まる。このとき内部は燃焼熱で高温になり、応力
を受ける方向が逆になる。それは外周に引っ張り応力が
かかる状態である。しかし、外周は電気ヒータにより加
熱されて伸びているため、従来はど引っ張り応力がかか
らず、外周部にクラックの生じるような大きな変位を受
けることはない。That is, when approximately 100 Whr of electric power is applied to the electric heater wrapped around the outer periphery of the ceramic honeycomb, the heater becomes red hot and heats the outer periphery of the ceramic honeycomb. On the other hand, from the heater to the outside, there is insulation wrapped in ceramic honeycomb.
It escapes slightly depending on the material. Therefore, the temperature near the outer periphery of the ceramic honeycomb is approximately 100°C higher than when it is not heated.
be raised to temperatures above This is a state in which the outer periphery of the ceramic honeycomb stretches in the axial direction due to thermal expansion, giving tensile stress to the interior. Stay in this state for a while (
If the particulates deposited on the ceramic honeycomb are ignited with an electric heater or oil burner, combustion will begin. At this time, the internal temperature becomes high due to the heat of combustion, and the direction of stress is reversed. It is a state in which tensile stress is applied to the outer periphery. However, since the outer periphery is heated and stretched by an electric heater, conventionally no tensile stress is applied to the outer periphery, and the outer periphery is not subject to large displacements that would cause cracks.
実施例
以下、本発明のディーゼル排ガス浄化装置の一実施例を
添付図面にもとづいて説明する。Embodiment Hereinafter, one embodiment of the diesel exhaust gas purification device of the present invention will be described based on the accompanying drawings.
図はディーゼル排ガス浄化装置の縦断面を示しており、
１は内部に多数のセル２ａ、２ｂを有するセラミックハ
ニカムである。セル２ａ、２ｂの一端は交互にプラグ３
で閉塞し、セラミックフィルタを構成している。セラミ
ックハニカム１の外周には電気ヒータ４が数ｍｍの等間
隔に端部から端部まで巻いて、電極５ａ及び５ｂに接続
しである。またセラミックハニカム１には、電気ヒータ
４を巻いた上に、セラミック繊維を有機バインダで固め
てシート状にした断熱性の良い緩衝材６を巻き、円筒状
のステンレス製容器７内に収納している。容器７の内側
にはセラミックハニカム１の前後して緩衝材６が動かな
いようにストッパ８ａ、８ｂを溶接しである。また電極
５ａ、５ｂは、容器７の側面を貫いて外部に露出し、エ
ンジンに搭載したバッテリー（図示せず）接続して、電
気を印加できるようになっている。また容器７は、前方
をコーン状に口径を絞り、その端にオイルバーナ９を具
備している。オイルバーナ９は、空気霧化ノズル１０を
中心に置き、その周辺から−次空気口１１を経て空気が
霧化ノズル１０の先端方向に流れるようにして、良好な
燃焼が得られる構造となっている。また、その外周部に
はりジェネレーション用に新鮮な空気を供給する二次空
気口１２を設けて、燃焼を不安定にすることな（、パテ
ィキュレートの燃焼に空気を与えることができる構造と
なっている。また霧化ノズル１０の前方には霧化された
燃料に着火するため、高圧放電でアークを発生させる点
火プラグ１３を取り付けている。さらにオイルバーナ９
とセラミックハニカム１の中間付近、容器７のコーン状
に紋られている部分に、排ガス導入管１４を接続してい
る。排ガス導入管１４は、エンジン（図示せず）の排気
管１５を排ガスバイパス管１６とに分岐した一方である
。セラミックハニカム１の、後方には、これまた容器７
がコーン状に絞り込まれ、排気マフラー（図示せず）に
接続したマフラー接続口１７が設けられている。またこ
のマフラー接続口１７には、前記排ガスバイパス管１６
が途中で合流して接続しである。排ガス導入管１４と排
ガスバイパス管１６の分岐点には三方バルブ１８が設け
てあり、それが回転することによりエンジンからの排ガ
スを排ガス導入管１４や排ガスバイパス管１６に切り替
えることができる。The figure shows a longitudinal section of a diesel exhaust gas purification device.
1 is a ceramic honeycomb having a large number of cells 2a, 2b inside. One ends of the cells 2a and 2b are alternately plugged into the plug 3.
The filter is closed with a ceramic filter. Electric heaters 4 are wound around the outer periphery of the ceramic honeycomb 1 from end to end at regular intervals of several mm and connected to electrodes 5a and 5b. Furthermore, an electric heater 4 is wrapped around the ceramic honeycomb 1, and a cushioning material 6 with good heat insulation properties, which is made by hardening ceramic fibers with an organic binder into a sheet shape, is wrapped around the ceramic honeycomb 1, and the material is stored in a cylindrical stainless steel container 7. There is. Stoppers 8a and 8b are welded to the inside of the container 7 to prevent the buffer material 6 from moving before and after the ceramic honeycomb 1. Further, the electrodes 5a and 5b are exposed to the outside through the side surface of the container 7, and are connected to a battery (not shown) mounted on the engine so that electricity can be applied thereto. Further, the container 7 has a cone-shaped front end with a narrowed diameter, and an oil burner 9 is provided at the end thereof. The oil burner 9 has a structure in which an air atomizing nozzle 10 is placed at the center, and air flows from its periphery toward the tip of the atomizing nozzle 10 via a secondary air port 11 to achieve good combustion. There is. In addition, a secondary air port 12 is provided on the outer periphery to supply fresh air for beam generation to prevent combustion from becoming unstable (and to provide air to the combustion of particulates). In addition, an ignition plug 13 is installed in front of the atomization nozzle 10 to generate an arc with high-pressure discharge in order to ignite the atomized fuel.Furthermore, an oil burner 9 is installed.
An exhaust gas introduction pipe 14 is connected to a cone-shaped part of the container 7 near the middle of the ceramic honeycomb 1 and the ceramic honeycomb 1. The exhaust gas introduction pipe 14 is one branch of an exhaust pipe 15 of an engine (not shown) into an exhaust gas bypass pipe 16. At the rear of the ceramic honeycomb 1, there is also a container 7.
is narrowed into a cone shape, and is provided with a muffler connection port 17 connected to an exhaust muffler (not shown). Further, the exhaust gas bypass pipe 16 is connected to the muffler connection port 17.
They meet in the middle and are connected. A three-way valve 18 is provided at the branch point of the exhaust gas introduction pipe 14 and the exhaust gas bypass pipe 16, and by rotating the three-way valve 18, exhaust gas from the engine can be switched to the exhaust gas introduction pipe 14 or the exhaust gas bypass pipe 16.
次に、この一実施例の構成における動作を説明する。ま
ずディーゼルエンジンの通常運転時について説明する。Next, the operation of the configuration of this embodiment will be explained. First, the normal operation of the diesel engine will be explained.
この場合は三方バルブ１８は図の位置にあり、エンジン
がらの排ガスは排ガス導入管１４を経てセラミックハニ
カム１の前面に到達する。ここから排ガスはセラミック
ハニカム１のオイルバーナ９側に開口しているセル２ａ
に入り、そこでセル壁を透過してマフラー接続口１，７
側に開口しているセル２ｂに入る。このとき排ガス中に
含まれているパティキュレートは、セル壁を透過できず
に、オイルバーナ９側に開口しているセル２ａ内にとど
まって堆積する。一方パティキュレートを取り除かれク
リーンになった排ガスは、マフラー接続口１７に入り、
排気マフラーを経て大気に放出される。このようなパテ
ィキュレートを堆積する作業は１時間がら２時間がけて
、継続して行われる。そしてセラミックハニカム１内に
十分にパティキュレートが溜まり、これ以上溜まるとエ
ンジンに悪影響を与える段階になるとりジェネレーショ
ンに入る。リジェネレーションには、まず三方バルブ１
８を図の上から見て時計方向に約４０°回転させ、排ガ
ス導入管１４に流れていた排ガスを遮って、排ガスバイ
パス管１６の方に流れを切り替える。そして排ガスバイ
パス管１６に流れ込んだ排ガスは、マフラー接続口１７
に流れ込み、排気マフラーを経て大気に放出される。こ
の三方バルブ１８の切り替えと同時に、電極５ａ、５ｂ
の両端にバッテリーがら１２Ｖの電気を印加し、約７Ａ
の電流を流す。この状態で約３分開面いてセラミックハ
ニカム１の外周が１５０℃以上になった時、バーナ９を
作動させる。バーナ９の作動は、まずオイルと霧化用空
気を霧化ノズルｌＯに送り込み液体燃料の霧化を始める
。それと同時に燃焼用−次空気口１１と二次空気口１２
がら空気を送り込む。この時、点火プラグ１３により霧
化された燃料に着火すると、バーナの燃焼が始まり、そ
のまま持続する。オイルバーナ９の出力は２０００ｋｃ
ａ ｌ／ｈ 〜４０００ｋｃａｌ／ｈの間で変化させ容
器７との放熱バランスで常に約７００℃付近に燃焼ガス
温度が一定になるように制御している。この状態で約２
分後、セラミックハニカム１の内部温度は６００℃以上
になり、内部に堆積したパティキュレートは燃焼を始め
る。そしてセラミックハニカム１の内部温度は入口温度
の７００℃より高（なり、約８００℃から１０００℃に
まで達する。しがし、セラミックハニカム１の外周温度
も電気ヒータ４と内部の燃焼熱の伝導により温度が上り
、約５０．０℃に上昇する。この状態で５分間維持され
、セラミックハニカム１内に堆積したパティキュレート
はすべて焼き尽くされ、内部はクリーンな元の状態に戻
る。そして、まず電気ヒータに印加されていた電流が遮
断し、バーナ９を止める。その後三方バルブ１８を反時
計回りに回転させ、排気バイパス管１６に流れていた排
ガスの流れを切り替えて、排ガス導入管１４に流れ込ま
せ、通常の運転状態に戻す。In this case, the three-way valve 18 is in the position shown in the figure, and the exhaust gas from the engine reaches the front surface of the ceramic honeycomb 1 through the exhaust gas introduction pipe 14. From here, the exhaust gas is discharged from the cell 2a that opens to the oil burner 9 side of the ceramic honeycomb 1.
There, it passes through the cell wall and enters the muffler connection ports 1 and 7.
Enter cell 2b which is open on the side. At this time, the particulates contained in the exhaust gas cannot pass through the cell walls, but remain and accumulate within the cells 2a that are open to the oil burner 9 side. On the other hand, the exhaust gas, which is clean after removing particulates, enters the muffler connection port 17.
It is released into the atmosphere through the exhaust muffler. This work of depositing particulates is continuously carried out over a period of one to two hours. Then, a sufficient amount of particulates accumulates in the ceramic honeycomb 1, and if any more particulates accumulate, it will enter a generation stage where it will adversely affect the engine. For regeneration, first the three-way valve 1
8 is rotated clockwise by about 40 degrees when viewed from above, the exhaust gas flowing into the exhaust gas introduction pipe 14 is blocked, and the flow is switched to the exhaust gas bypass pipe 16. The exhaust gas that has flowed into the exhaust gas bypass pipe 16 is then transferred to the muffler connection port 17.
and is released into the atmosphere through the exhaust muffler. At the same time as this switching of the three-way valve 18, the electrodes 5a, 5b
Apply 12V electricity from the battery to both ends of the
A current flows through the current. The burner 9 is activated when the outer periphery of the ceramic honeycomb 1 reaches 150° C. or higher after being opened for about 3 minutes in this state. The burner 9 is operated by first sending oil and atomizing air to the atomizing nozzle 10 to begin atomizing the liquid fuel. At the same time, the secondary air port 11 and the secondary air port 12 for combustion
Suck in the air. At this time, when the atomized fuel is ignited by the spark plug 13, combustion in the burner begins and continues as it is. The output of oil burner 9 is 2000kc
a l/h to 4000 kcal/h and is controlled so that the combustion gas temperature is always kept constant around about 700° C. by adjusting the heat radiation balance with the container 7. Approximately 2 in this state
After a few minutes, the internal temperature of the ceramic honeycomb 1 becomes 600° C. or more, and the particulates deposited inside start to burn. The internal temperature of the ceramic honeycomb 1 is higher than the inlet temperature of 700°C, reaching approximately 800°C to 1000°C.However, the outer temperature of the ceramic honeycomb 1 is also due to the electric heater 4 and conduction of internal combustion heat. The temperature rises to about 50.0°C. This state is maintained for 5 minutes, and all the particulates deposited in the ceramic honeycomb 1 are burned out, returning the interior to its original clean state. The electric current applied to the heater is cut off and the burner 9 is stopped.Then, the three-way valve 18 is rotated counterclockwise to switch the flow of the exhaust gas that was flowing through the exhaust bypass pipe 16 and to flow into the exhaust gas introduction pipe 14. , return to normal operating condition.
このようにセラミックハニカム１内に堆積したパティキ
ュレートを消却する時、すなわちリジェネレーション時
には、電気ヒータによりセラミックハニカム１の外周部
も同時に加熱する。よってセラミックハニカム１の内部
と外周部との間に大きな温度差が生じず、これによって
発生する熱応力は小さい。When extinguishing the particulates deposited in the ceramic honeycomb 1 in this manner, that is, during regeneration, the outer circumferential portion of the ceramic honeycomb 1 is simultaneously heated by the electric heater. Therefore, a large temperature difference does not occur between the inside and the outer circumference of the ceramic honeycomb 1, and the thermal stress generated thereby is small.
尚、本実施例では、パティキュレートの燃焼温度までセ
ラミックハニカム１の温度を持ち上げるのに、オイルバ
ーナ９を用いたが、その代わりとして電気ヒータをセラ
ミックハニカムの前面に配設する方法が他の実施例とし
である。この方法によるとりジェネレーション時、三方
バルブ１８で排ガス導入路１４を完全に締め切らずに一
部流し、排ガス中に含まれる僅かな酸素でもってセラミ
ックハニカム１内のパティキュレートを燃焼させる。In this example, the oil burner 9 was used to raise the temperature of the ceramic honeycomb 1 to the combustion temperature of the particulates, but another method may be used in which an electric heater is placed in front of the ceramic honeycomb instead. Here is an example. During generation using this method, part of the exhaust gas introduction path 14 is allowed to flow through the three-way valve 18 without being completely closed off, and the particulates in the ceramic honeycomb 1 are combusted with a small amount of oxygen contained in the exhaust gas.
発明の効果
本発明はりジェネレーション時に、セラミックハニカム
の外周を電気ヒータで加熱して、外周部と内部との温度
差を小さ（するものである。これによって発生する熱応
力を小さく抑えることができ、セラミックハニカムの外
周部にクラックを発生することが無くなった。よってデ
ィーゼル排ガス浄化装置は、はぼエンジンの耐用年数に
見合う耐久性を確保することができた。Effects of the Invention During beam generation of the present invention, the outer periphery of the ceramic honeycomb is heated with an electric heater to reduce the temperature difference between the outer periphery and the inside.Thermal stress generated thereby can be suppressed to a small level. Cracks no longer occur on the outer periphery of the ceramic honeycomb.Therefore, the diesel exhaust gas purification system has been able to ensure durability commensurate with the service life of the Habo engine.
図は本発明の一実施例のディーゼル排ガス浄化装置の縦
断面図である。
１・・・・セラミックハニカム、４・・・・電気ヒータ
、５ａ、５ｂ・・・・電極、６・・・・緩衝材、７・・
・・容器、９・・・・オイルバーナ、１０・・・・霧化
ノズル、１４・・・・排ガス導５人管、１６・・・・排
ガスバイパス管、１８・・・・三方バルブ。The figure is a longitudinal sectional view of a diesel exhaust gas purification device according to an embodiment of the present invention. 1... Ceramic honeycomb, 4... Electric heater, 5a, 5b... Electrode, 6... Cushioning material, 7...
... Container, 9 ... Oil burner, 10 ... Atomization nozzle, 14 ... Exhaust gas guide five-way pipe, 16 ... Exhaust gas bypass pipe, 18 ... Three-way valve.
Claims (3)
グで閉塞してフィルタとしたセラミックハニカムと、該
セラミックハニカムを収納する容器と、該容器とセラミ
ックハニカムの間隙を埋める緩衝材と、該セラミックハ
ニカムを加熱する手段とからなる排ガス浄化装置におい
て、該セラミックハニカムの外周壁面に電気ヒータを巻
き、該電気ヒータに通電して該セラミックハニカムの外
周を加熱するよう構成したことを特徴とするディーゼル
排ガス浄化装置。(1) A ceramic honeycomb that is used as a filter by alternately closing one end of cells and the other end of adjacent cells with plugs, a container that stores the ceramic honeycomb, and a buffer material that fills the gap between the container and the ceramic honeycomb. , an exhaust gas purification device comprising means for heating the ceramic honeycomb, characterized in that an electric heater is wound around the outer peripheral wall surface of the ceramic honeycomb, and the electric heater is energized to heat the outer periphery of the ceramic honeycomb. Diesel exhaust gas purification equipment.
バーナを配備し、該セラミックハニカムを加熱する手段
とした特許請求の範囲第１項記載のディーゼル排ガス浄
化装置。(2) The diesel exhaust gas purification device according to claim 1, wherein an oil burner is provided in front of the exhaust gas inflow side of the ceramic honeycomb as means for heating the ceramic honeycomb.
ータを配設し、該セラミックハニカムを加熱する手段と
した特許請求の範囲第１項記載のディーゼル排ガス浄化
装置。(3) The diesel exhaust gas purification device according to claim 1, wherein an electric heater is disposed on the front surface of the exhaust gas inflow side of the ceramic honeycomb as means for heating the ceramic honeycomb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25103387A JPH086580B2 (en) | 1987-10-05 | 1987-10-05 | Diesel exhaust gas purification equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25103387A JPH086580B2 (en) | 1987-10-05 | 1987-10-05 | Diesel exhaust gas purification equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0196414A true JPH0196414A (en) | 1989-04-14 |
| JPH086580B2 JPH086580B2 (en) | 1996-01-24 |
Family
ID=17216614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25103387A Expired - Fee Related JPH086580B2 (en) | 1987-10-05 | 1987-10-05 | Diesel exhaust gas purification equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH086580B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436759A (en) * | 2019-08-08 | 2019-11-12 | 东莞市仕易陶瓷科技有限公司 | A kind of atomizer and preparation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58163617U (en) * | 1982-04-28 | 1983-10-31 | トヨタ自動車株式会社 | Diesel engine back pressure detection port |
| JPS5968118U (en) * | 1982-10-30 | 1984-05-09 | いすゞ自動車株式会社 | Internal combustion engine exhaust purification device |
| JPS60159813U (en) * | 1984-04-02 | 1985-10-24 | 日産自動車株式会社 | Internal combustion engine exhaust particulate filter |
| JPS6174616U (en) * | 1984-10-22 | 1986-05-20 |
-
1987
- 1987-10-05 JP JP25103387A patent/JPH086580B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58163617U (en) * | 1982-04-28 | 1983-10-31 | トヨタ自動車株式会社 | Diesel engine back pressure detection port |
| JPS5968118U (en) * | 1982-10-30 | 1984-05-09 | いすゞ自動車株式会社 | Internal combustion engine exhaust purification device |
| JPS60159813U (en) * | 1984-04-02 | 1985-10-24 | 日産自動車株式会社 | Internal combustion engine exhaust particulate filter |
| JPS6174616U (en) * | 1984-10-22 | 1986-05-20 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436759A (en) * | 2019-08-08 | 2019-11-12 | 东莞市仕易陶瓷科技有限公司 | A kind of atomizer and preparation method |
| CN110436759B (en) * | 2019-08-08 | 2023-07-25 | 东莞市仕易陶瓷科技有限公司 | Atomizer and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH086580B2 (en) | 1996-01-24 |
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